Cyclone type liquid-vapor separator and forced circulation type evaporator using the same

ABSTRACT

A cyclone type liquid-vapor separator includes a chamber including: an internal space wherein the treatment liquid introduced into the internal space is depressurized and evaporated; a vapor outlet formed on a top of the chamber and through which vapors generated through the evaporation is discharged; and a concentrated liquid outlet formed on a bottom of the chamber and through which the concentrated treatment liquid is discharged; an inlet part coupled to a side surface of the chamber in a tangent line direction of an inner peripheral surface of the chamber, the treatment liquid introduced into the chamber is turned in the form of vortexes along the inner peripheral surface of the chamber, and at least one partition wall disposed in an area between the inlet part and the vapor outlet of the internal space of the chamber and protruding from the inner peripheral wall of the chamber to prevent mist contained in the vapors from moving upwardly.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims benefit of priority to Korean Patent ApplicationNo. 10-2015-0140309 filed on Oct. 6, 2015 in the Korean IntellectualProperty Office, the disclosure of which is incorporated herein byreference in its entirety.

BACKGROUND Field

Apparatuses consistent with exemplary embodiments relate to a cyclonetype liquid-vapor separator and a forced circulation type evaporatorusing the same, and more particularly, to a cyclone type liquid-vaporseparator that is coupled to a heat exchanger to constitute a forcedcirculation type evaporator, thereby replacing a conventionalliquid-vapor separator in which a reflection plate or a diffusion nozzleis disposed to ensure flashing area therewith.

Background of the Related Art

A forced circulation type evaporator is generally used as a crystallizerin sewage and wastewater treatment facilities, seawater desalinationfacilities, zero liquid discharge ZLD facilities, and facilities forconcentrating food like sugar, salt, fruit liquids and so on.

The forced circulation type evaporator includes a heat exchanger forheating treatment liquid through a heat medium and a liquid-vaporseparator for injecting the heated treatment liquid into a chamber,evaporating the treatment liquid, and separating the evaporatedtreatment liquid into vapors and concentrated liquid, and theconcentrated liquid discharged from the liquid-vapor separator isrecycled to the heat exchanger through a pump.

As shown in FIGS. 1a and 1b , the liquid-vapor separator of the relatedart used in the forced circulation type evaporator has a reflectionplate (which is shown in FIG. 1a ) or a diffusion nozzle (which is shownin FIG. 1b ) disposed in a chamber so as to ensure the flashing area inthe chamber.

In the process where the treatment liquid is injected through the spraynozzle in the liquid-vapor separator of the related art, however, foamsare produced and mixed with the separated vapors, thereby giving badinfluences on next stage. Further, caking is caused so that crystals ofsolid substances are produced from the concentrated liquid discharged tothe lower portion of the liquid-vapor separator of the related art,thereby undesirably reducing the efficiencies in the removal of thesolid substances in a dewatering process on the next stage.

Accordingly, there is a need for the development of a new liquid-vaporseparator capable of ensuring a flashing area over a given level, whilenot adopting the spray nozzle injection of the related art, so that nofoams are produced, thereby enhancing the efficiency of evaporation, andfurther capable of forming round and uniform crystals, thereby improvingthe efficiencies in the removal of solid substances on next stagethereof.

SUMMARY

Accordingly, the exemplary embodiment has been made in view of theabove-mentioned problems occurring in the prior art, and it is an objectof the present disclosure to provide a cyclone type liquid-vaporseparator and a forced circulation type evaporator using the same thatis capable of ensuring a flashing area over a given level, while notadopting a spray nozzle injection, so that no foams are produced,thereby enhancing the efficiency of evaporation, and further capable offorming round and uniform crystals, thereby improving the efficienciesin the removal of solid substances on next stage thereof.

To accomplish the above-mentioned object, according to a first aspect ofan exemplary embodiment, there is provided a cyclone type liquid-vaporseparator for separating vapors from treatment liquid introducedthereinto, discharging the separated vapors to the upper portionthereof, and discharging concentrated treatment liquid to the lowerportion thereof, the liquid-vapor separator 100 including: a chamber 110having an internal space formed therein so that the treatment liquidintroduced thereinto is depressurized and evaporated to allow the vaporsgenerated through the evaporation to be discharged through a vaporoutlet 111 formed on the top thereof and to allow the concentratedtreatment liquid to be discharged through a concentrated liquid outlet112 formed on the bottom thereof; an inlet part 120 coupled to the sidesurface of the chamber 110 in a tangent line direction of the innerperipheral surface of the chamber 110 so as to inject the treatmentliquid introduced thereinto, so that the treatment liquid is turned inthe form of vortexes along the inner peripheral surface of the chamber110; and at least one or more partition walls 130 disposed in an areabetween the inlet part 120 and the vapor outlet 111 of the internalspace of the chamber 110 in such a manner as to protrude from the innerperipheral wall of the chamber to prevent the mist contained in thevapors produced from moving upwardly.

According to the exemplary embodiment, desirably, the partition walls130 inclinedly protrude upwardly from the inner peripheral surface ofthe chamber 110 at an angle of 90 to 180°.

According to the exemplary embodiment, desirably, the inlet part 120 hasa guide part 121 disposed extendedly by a given section along the innerperipheral surface of the chamber 110 from the connected portion to theside surface of the chamber 110 so as to guide the rotation of thetreatment liquid introduced therethrough.

According to the exemplary embodiment, desirably, the guide part 121 isa separate member protruding from the inner peripheral surface of thechamber 110.

According to the exemplary embodiment, desirably, the guide part 121 isformed by passing the pipe of the inlet part 120 through the chamber110, extendedly inserting the pipe of the inlet part 120 into thechamber 110, and fastening the pipe of the inlet part 120 to the innerperipheral surface of the chamber 110 along the inner peripheral surfaceof the chamber 110.

According to the exemplary embodiment, desirably, the pipe of the inletpart 120, which is passed through the chamber 110 and extendedlyinserted into the chamber 110 to form the guide part 121, is open on agiven area of the top portion thereof.

According to the exemplary embodiment, desirably, the liquid-vaporseparator 100 further includes an interior demister 140 a disposed onany one or more areas above or under the partition walls 130 in thechamber 110 and having a mesh type plate member adapted to block themist contained in the vapors in the process wherein the generated vaporsare discharged upwardly.

According to the exemplary embodiment, desirably, the liquid-vaporseparator further includes an exterior demister 140 b disposedseparately to the outside of the chamber 110 in such a manner as to beconnected to the end of the vapor outlet 111 to introduce the dischargedvapors from the vapor outlet thereinto and having a chevron type memberdisposed in a moving path of the introduced vapors to block the mistcontained in the vapors.

According to the exemplary embodiment, desirably, the inner peripheralwall of the chamber 110 is tapered toward the concentrated liquid outlet112 formed on the bottom of the chamber 110 to reduce the turning radiusof the treatment liquid.

According to the exemplary embodiment, desirably, the liquid-vaporseparator 100 further includes vortex breaking members 150 disposed onan area wherein the concentrated liquid outlet 112 is formed on thebottom of the chamber 110 so as to break the vortexes generated from thetreatment liquid.

According to the exemplary embodiment, desirably, the vortex breakingmembers 150 are at least two or more plate members crossing each otherin such a manner as to be parallel to the discharge direction of theconcentrated treatment liquid.

To accomplish the above-mentioned objects, according to a second aspectof the exemplary embodiment, there is provided a forced circulation typeevaporator A for evaporating and concentrating treatment liquid,including: a heat exchanger 200 adapted to heat the treatment liquidintroduced thereinto by means of heat exchange with a heat mediumintroduced from the outside thereof; and a liquid-vapor separator 100for separating vapors from the heated treatment liquid introduced fromthe heat exchanger 200, discharging the separated vapors to the upperportion thereof, and discharging concentrated treatment liquid to thelower portion thereof, wherein the liquid-vapor separator 100 includes:a chamber 110 having an internal space formed therein so that thetreatment liquid introduced thereinto is depressurized and evaporated toallow the vapors generated through the evaporation to be dischargedthrough a vapor outlet 111 formed on the top thereof and to allow theconcentrated treatment liquid to be discharged through a concentratedliquid outlet 112 formed on the bottom thereof; an inlet part 120coupled to the side surface of the chamber 110 in a tangent linedirection of the inner peripheral surface of the chamber 110 so as toinject the treatment liquid introduced thereinto, so that the treatmentliquid is turned in the form of vortexes along the inner peripheralsurface of the chamber 110; and at least one or more partition walls 130disposed in an area between the inlet part 120 and the vapor outlet 111of the internal space of the chamber 110 in such a manner as to protrudefrom the inner peripheral wall of the chamber 110 to prevent the mistcontained in the vapors produced from moving upwardly.

According to the exemplary embodiment, desirably, the forced circulationtype evaporator further includes a suction pump 300 connected to therear end of the liquid-vapor separator 100 to provide power fordischarging the concentrated treatment liquid from the liquid-vaporseparator 100.

According to the exemplary embodiment, desirably, the partition walls130 inclinedly protrude upwardly from the inner peripheral surface ofthe chamber 110 at an angle of 90 to 180°.

According to the exemplary embodiment, desirably, the inlet part 120 hasa guide part 121 disposed extendedly by a given section along the innerperipheral surface of the chamber 110 from the connected portion to theside surface of the chamber 110 so as to guide the rotation of thetreatment liquid introduced therethrough, the guide part 121 being aseparate member protruding from the inner peripheral surface of thechamber 110 or being formed by passing the pipe of the inlet part 120through the chamber 110, extendedly inserting the pipe of the inlet part120 into the chamber 110, and fastening the pipe of the inlet part 120to the inner peripheral surface of the chamber 110 along the innerperipheral surface of the chamber 110, wherein the pipe of the inletpart 120, which is passed through the chamber 110 and extendedlyinserted into the chamber 110 to form the guide part 121, is open on agiven area of the top portion thereof.

According to the exemplary embodiment, desirably, the forced circulationtype evaporator further includes an interior demister 140 a disposed onany one or more areas above or under the partition walls 130 in thechamber 110 and having a mesh type plate member adapted to block themist contained in the vapors in the process wherein the generated vaporsare discharged upwardly, or an exterior demister 140 b disposedseparately to the outside of the chamber 110 in such a manner as to beconnected to the end of the vapor outlet 111 to introduce the dischargedvapors from the vapor outlet thereinto and having a chevron type memberdisposed in a moving path of the introduced vapors to block the mistcontained in the vapors.

According to an aspect of an exemplary embodiment, there is provided acyclone type liquid-vapor separator for separating vapors from treatmentliquid introduced thereinto, discharging the separated vapors to theupper portion thereof, and discharging concentrated treatment liquid tothe lower portion thereof, the liquid-vapor separator including: achamber including: an internal space wherein the treatment liquidintroduced into the internal space is depressurized and evaporated; avapor outlet formed on a top of the chamber and through which vaporsgenerated through the evaporation is discharged; and a concentratedliquid outlet formed on a bottom of the chamber and through which theconcentrated treatment liquid is discharged; an inlet part coupled to aside surface of the chamber in a tangent line direction of an innerperipheral surface of the chamber, the treatment liquid introduced intothe chamber is turned in the form of vortexes along the inner peripheralsurface of the chamber, and at least one partition wall disposed in anarea between the inlet part and the vapor outlet of the internal spaceof the chamber and protruding from the inner peripheral wall of thechamber to prevent mist contained in the vapors from moving upwardly.

The at least one partition wall may inclinedly protrude upwardly fromthe inner peripheral surface of the chamber at an angle of 90 to 180°.

The inlet part may include a guide part disposed extendedly by a sectionalong the inner peripheral surface of the chamber from a connectedportion to the side surface of the chamber and configured to guide arotation of the treatment liquid introduced through the inlet part.

The guide part may be separate from the inlet part and protrude from theinner peripheral surface of the chamber.

The guide part may include a pipe passing through the inlet part, thepipe extendedly inserted into the chamber, and being fastened to theinner peripheral surface of the chamber along the inner peripheralsurface of the chamber.

The pipe of the inlet part, which is passed through the chamber andextendedly inserted into the chamber, may be open on a top portion ofthe pipe.

The liquid-vapor separator may further include an interior demisterdisposed above or under the at least one partition wall in the chamberand having a mesh type plate member configured to block the mistcontained in the vapors discharged upwardly.

The liquid-vapor separator may further include an exterior demisterdisposed separately to an exterior of the chamber in such a manner as tobe connected to an end of the vapor outlet to introduce the dischargedvapors from the vapor outlet thereinto and having a chevron type memberdisposed in a moving path of the introduced vapors to block the mistcontained in the vapors.

The inner peripheral wall of the chamber may be tapered toward theconcentrated liquid outlet formed on the bottom of the chamber to reducea turning radius of the treatment liquid.

The liquid-vapor separator may further include a vortex breaking memberdisposed on an area wherein the concentrated liquid outlet is formed onthe bottom of the chamber so as to break the vortexes generated from thetreatment liquid.

The vortex breaking member may include at least two plate memberscrossing each other in such a manner as to be parallel to a dischargedirection of the concentrated treatment liquid.

According to an aspect of an exemplary embodiment, there is provided aforced circulation type evaporator for evaporating and concentratingtreatment liquid, including: a heat exchanger configured to heat thetreatment liquid introduced into the heat exchanger by a heat mediumintroduced from an exterior of the heat exchanger; and a liquid-vaporseparator configured to separate vapors from the heated treatment liquidfrom the heat exchanger, configured to discharge the separated vapors toan upper portion of the liquid-vapor separator, and configured todischarge concentrated treatment liquid to a lower portion of theliquid-vapor separator, wherein the liquid-vapor separator includes: achamber including: an internal space wherein the treatment liquidintroduced into the internal space is depressurized and evaporated; avapor outlet formed on a top of the chamber and through which vaporsgenerated through the evaporation is discharged; and a concentratedliquid outlet formed on a bottom of the chamber and through which theconcentrated treatment liquid is discharged; an inlet part coupled to aside surface of the chamber in a tangent line direction of an innerperipheral surface of the chamber, the treatment liquid introduced intothe chamber is turned in the form of vortexes along the inner peripheralsurface of the chamber; and at least one partition wall disposed in anarea between the inlet part and the vapor outlet of the internal spaceof the chamber and protruding from the inner peripheral wall of thechamber to prevent mist contained in the vapors from moving upward.

The forced circulation type evaporator may further include a suctionpump connected to a rear end of the liquid-vapor separator andconfigured to provide power for discharging the concentrated treatmentliquid from the liquid-vapor separator.

The at least one partition wall may inclinedly protrude upwardly fromthe inner peripheral surface of the chamber at an angle of 90 to 180°.

The inlet part may include a guide part disposed extendedly by a sectionalong the inner peripheral surface of the chamber from a connectedportion to the side surface of the chamber and configured to guide arotation of the treatment liquid introduced through the inlet part.

The guide part may be separate from the inlet part and protrudes fromthe inner peripheral surface of the chamber.

The guide part may include a pipe passing through the inlet part, thepipe extendedly inserted into the chamber, and being fastened to theinner peripheral surface of the chamber along the inner peripheralsurface of the chamber.

The pipe of the inlet part, which is passed through the chamber andextendedly inserted into the chamber, may be open on a top portion ofthe pipes.

The forced circulation type evaporator may further include an interiordemister disposed above or under the at least one partition wall in thechamber and having a mesh type plate member configured to block the mistcontained in the vapors discharged upwardly.

The forced circulation type evaporator may further include an exteriordemister disposed separately to an exterior of the chamber in such amanner as to be connected to an end of the vapor outlet to introduce thedischarged vapors from the vapor outlet thereinto and having a chevrontype member disposed in a moving path of the introduced vapors to blockthe mist contained in the vapors.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other objects, features and advantages of the exemplaryembodiment will be apparent from the following detailed description ofthe exemplary embodiments of the disclosure in conjunction with theaccompanying drawings, in which:

FIGS. 1a and 1b are schematic views showing two kinds of forcedcirculation type evaporators of the related art;

FIG. 2 is a schematic view showing a liquid-vapor separator according tothe exemplary embodiment, in which an interior demister is mounted;

FIGS. 3a and 3b are front and plan views showing the liquid-vaporseparator according to the exemplary embodiment, wherein an example ofthe coupling of an inlet part and a guide part to a chamber;

FIGS. 4a and 4b are front and plan views showing the liquid-vaporseparator according to the exemplary embodiment, wherein another exampleof the coupling of an inlet part and a guide part to a chamber;

FIG. 5 is a sectional view taken along the line A-A′ of FIG. 2;

FIG. 6 is a schematic view showing the liquid-vapor separator accordingto the exemplary embodiment, in which an exterior demister is mounted;and

FIG. 7 is a schematic view showing a forced circulation type evaporatoraccording to the exemplary embodiment.

DETAILED DESCRIPTION

Hereinafter, an explanation on a liquid-vapor separator and a forcedcirculation type evaporator having the liquid-vapor separator accordingto the exemplary embodiment will be in detail given with reference tothe attached drawing. Before the description, the terms or terminologyused in the description and claims of the exemplary embodiment are usedto only describe specific exemplary embodiments and are not intended torestrict the exemplary embodiment.

In the description, when it is said that one member is located “above”or “under” another member, it means that one member may come intocontact with another member as well as yet another member may existbetween the two members.

In the description, when it is said that one portion is described as“includes” any component, one element further may include othercomponents unless no specific description is suggested.

Identification symbols on steps are used for the convenience of thedescription, and they do not mean the order of the steps. The steps maybe differently carried out from the described order unless a specificorder is described. That is, the steps may be carried out in the sameorder as described, carried out at the same time, or carried out in theopposite order to that described.

In the description, a “front end” of a given member means all directionsto which a given gas or fluid is introduced into the given member, andin the same manner as above, a “rear end” of a given member means alldirections to which a given gas or fluid is discharged from the givenmember,

The exemplary embodiment is disclosed with reference to the attacheddrawings wherein the corresponding parts in the exemplary embodimentsare indicated by corresponding reference numerals and the repeatedexplanation on the corresponding parts will be avoided. If it isdetermined that the detailed explanation on the well-known technologyrelated to the inventive concept makes the scope of the presentinvention not clear, the explanation will be avoided for the brevity ofthe description.

In the description of the components of the exemplary embodiment,further, terms, such as the first, the second, A, B, (a), (b) and so onmay be used to describe various elements, but the elements should not berestricted by the terms. The terms are used to only distinguish oneelement from the other element. Accordingly, the inherence, sequence ororder of the corresponding element is not restricted by the terms.

When it is said that one element is described as being “connected” or“coupled” to another element, one element may be directly connected orcoupled to another element, but it should be understood that yet anotherelement may be “connected” or “coupled” between the two elements.

In the description, when it is said that one element is located “above”another element, it should be understood that one element is located insuch a manner as to pass through another element, and otherwise, anothermember is located in such a manner as to pass through one element.

The present disclosure relates to a liquid-vapor separator thatseparates vapors from treatment liquid to discharge the separated vaporsupwardly and discharge concentrated treatment liquid downwardly, andFIG. 2 is a schematic view showing a liquid-vapor separator according tothe exemplary embodiment.

A liquid-vapor separator 100 according to the exemplary embodimentincludes a chamber 110 having a vapor outlet 111 formed on the topthereof and a concentrated liquid outlet 112 formed on the bottomthereof, an inlet part 120 connected to the chamber 110 to introducetreatment liquid thereinto, and at least one or more partition walls 130disposed in the chamber 110 to prevent the mist contained in the vaporsproduced in the depressurization and evaporation process of thetreatment liquid from moving upwardly and introduced into next stage.

Particularly, the liquid-vapor separator 100 according to the exemplaryembodiment is not a conventional type device using a spray nozzle, but acyclone type device configured to have the inlet part 120 coupled to theside surface of the chamber 110 in a tangent line direction of the innerperipheral surface of the chamber 110, so that the treatment liquidforms vortexes along the inner peripheral surface of the chamber 110 bymeans of the inlet part 120.

Accordingly, as shown in FIG. 2, the treatment water rotates in the formof vortexes in the chamber 110, and depressurization and evaporationoccur from the surfaces of the vortexes. Further, the efficiency ofevaporation is enhanced by the increment of turbulent flow strength andflashing area, and hydrostatic pressure is lowered as it goes toward thecenter of the vortexes, thereby minimizing submersible loss. Also, roundand uniform crystals are formed through the mixing effects generated bythe turbulent flows in the form of vortexes, thereby improving theefficiency in the removal of solid substances on next stage, that is, ina dewatering process. Furthermore, a section in which the liquid staysdoes not exist in the chamber 110, thereby preventing the generation ofcaking.

As shown in FIG. 2, the liquid-vapor separator 100 according to theexemplary embodiment includes the at least one or more partition walls130 adapted to prevent the mist contained in the vapors produced in thechamber 110 from moving upwardly. In the vapor producing and raisingprocess, large and small mist (droplets) may move upwardly together withthe vapors, and in this case, relatively large mist is blocked by meansof the partition walls 130 and falls down by means of gravity.

The partition walls 130 are disposed in an internal space of the chamber110 between the inlet part 120 and the vapor outlet 111 in such a manneras to protrude from the inner peripheral surface of the chamber 110.More particularly, as shown in FIG. 2, the partition walls 130inclinedly protrude upwardly from the inner peripheral surface of thechamber 110 at an angle of 90 to 180°, thereby more effectively blockingthe upward movement of the mist and inducing downward movement of theblocked mist.

On the other hand, relatively small mist may be not blocked by means ofthe partition walls 130 and thus move upwardly, and so as to avoid theproblems, the liquid-vapor separator 100 according to the exemplaryembodiment further includes a demister. According to the exemplaryembodiment, as shown in FIG. 2, the liquid-vapor separator 100 has aninterior demister 140 a disposed therein. In more detail, the interiordemister 140 a is disposed on any one or more areas above or under thepartition walls 130 in the chamber 110 and has a mesh type plate memberadapted to block the mist contained in the vapors in the process whereinthe generated vapors are discharged upwardly. Through the formation ofthe interior demister 140 a, the mist not removed through the partitionwalls 130 is effectively filtered in the upward movement process of thevapors.

As shown in FIG. 6, the liquid-vapor separator 100 according to theexemplary embodiment may include an exterior demister 140 b. In moredetail, the exterior demister 140 b is disposed separately to theoutside of the chamber 110 in such a manner as to be connected to theend of the vapor outlet 111 to introduce the discharged vapors from thevapor outlet 111 thereinto and has a chevron type member disposed in amoving path of the introduced vapors to block the mist contained in thevapor. If the exterior demister 140 b is located at the outside of thechamber 11, the volume of the chamber 111 of the liquid-vapor separator100 using relatively high quality and high cost materials can be reducedeconomically, and further, the contamination of the demister isminimized, thereby making it easy to perform maintenance like cleaning.

The liquid-vapor separator 100 according to the exemplary embodimentfurther includes a guide part 121 disposed within the chamber 110 toguide the rotation of the treatment liquid so that the vortexes in thechamber 110 are formed in uniform heights to provide sufficientevaporation efficiencies.

If the treatment liquid is introduced from the inlet part 120 in thetangent line direction of the inner peripheral surface of the chamber110 into the chamber 110, without having the guide part 121, the watersurface on the opposite area to the area adjacent to the inlet part 120becomes lower than that on the area adjacent to the inlet part 120through the influence of gravity and the reduction of the pressure ofthe introduced treatment liquid, and accordingly, unbalancing on thewater surfaces is caused to have a bad influence on the evaporationefficiency.

So as to remove the above-mentioned problems, accordingly, the guidepart 121 is disposed extendedly by a given section along the innerperipheral surface of the chamber 110 in the rotating direction of thetreatment liquid from the connected portion between the inlet part 120and the side surface of the chamber 110, so that the treatment liquidsupplied from the inlet part 120 can maintain the introduced pressure toa given level, without having no influence under gravity for the givensection.

As shown in FIGS. 3a and 3b , the guide part 121 is a separate memberprotruding from the inner peripheral surface of the chamber 110.Referring to FIG. 3b , the treatment liquid supplied from the inlet part120 flows along the guide part 121 protruding by the given section fromthe inner peripheral surface of the chamber 110, thereby causing theentirely uniform vortexes therefrom.

On the other hand, as shown in FIGS. 4a and 4b , the guide part 121 isformed by extending the pipe constituting the inlet part 120 by thegiven section. In more detail, the pipe of the inlet part 120 is passedthrough the chamber 110, extendedly inserted into the chamber 110, andfastened to the inner peripheral surface of the chamber 110 along theinner peripheral surface of the chamber 110. So as to allow theevaporation to be carried out even in the extendedly inserted area ofthe inlet part 120, at this time, the pipe of the inlet part 120, whichis extendedly inserted into the chamber 110 to form the guide part 121,as shown in FIGS. 4a and 4b , is desirably open on a given area of thetop portion thereof.

As shown in FIG. 2, the inner peripheral wall of the chamber 110 of theliquid-vapor separator 100 according to the exemplary embodiment isdesirably tapered toward the concentrated liquid outlet 112 formed onthe bottom thereof to reduce the turning radius of the treatment liquid.Under the lower portion structure of the chamber 110 wherein thesectional area thereof is gradually reduced, at this time, when thetreatment liquid reaches the concentrated liquid outlet 112, drasticvortexes are generated to cause cavitation thereon, which gives badinfluence on a pump connected to the rear end of the chamber 110 toprovide the power for discharging the concentrated treatment liquid fromthe chamber 110.

So as to remove the above-mentioned problems, the liquid-vapor separator100 according to the exemplary embodiment further includes vortexbreaking members 150 disposed on the area wherein the concentratedliquid outlet 112 is formed on the lower portion of the chamber 110 soas to break the vortexes generated from the treatment liquid. The vortexbreaking members 150 are located on the path of the discharged treatmentliquid and block the vortex flows of the treatment liquid, therebybreaking the vortexes formed therein. FIG. 5 is a sectional view takenalong the line A-A′ of FIG. 2, and as shown in FIG. 5, the vortexbreaking members 150 are at least two or more plate members crossingeach other in such a manner as to be parallel to the discharge directionof the concentrated treatment liquid.

On the other hand, the exemplary embodiment relates to a forcedcirculation type evaporator A that has the liquid-vapor separator 100 toevaporate and concentrate the treatment liquid. FIG. 7 is a schematicview showing the forced circulation type evaporator A according to theexemplary embodiment.

The forced circulation type evaporator A according to the exemplaryembodiment includes a heat exchanger 200 adapted to heat the treatmentliquid introduced thereinto by means of heat exchange and theliquid-vapor separator 100 adapted to separate the heated treatmentliquid into vapors and concentrated treatment liquid and to dischargethe vapors and the concentrated treatment liquid.

Further, the forced circulation type evaporator A according to theexemplary embodiment further includes a suction pump 300 adapted toprovide power for discharging the concentrated treatment liquid from theconcentrated liquid outlet 112 formed on the rear end of theliquid-vapor separator 100, and the whole or a portion of theconcentrated treatment liquid discharged through the suction pump 300 isrecycled to the heat exchanger 200.

As mentioned above, the liquid-vapor separator and the forcedcirculation type evaporator having the liquid-vapor separator accordingto the exemplary embodiment do not adopt the conventional spray nozzleinjection system so that no foams are produced and the flashing area isprovided over a given level, thereby enhancing the efficiency ofevaporation, and further form the round and uniform crystals, therebyimproving the efficiency in the removal of solid substances on nextstage thereof.

Additionally, the liquid-vapor separator and the forced circulation typeevaporator having the liquid-vapor separator according to the exemplaryembodiment can enhance the efficiencies of evaporation and separationthrough the increment of turbulent flow strength and flashing area,thereby overcoming a scale production problem and a referencestrengthening problem of water discharge, which are recently issued onthe interior of the forced circulation type evaporator.

While exemplary embodiment have been described with reference to theparticular illustrative embodiments, it is not to be restricted by theembodiments but only by the appended claims. It is to be appreciatedthat those skilled in the art can change or modify the embodimentswithout departing from the scope and spirit of the inventive concept asdefined by the appended claims.

1-20. (canceled)
 21. A cyclone type liquid-vapor separator forseparating vapors from treatment liquid introduced thereinto,discharging the separated vapors to the upper portion thereof, anddischarging concentrated treatment liquid to the lower portion thereof,the liquid-vapor separator comprising: a chamber comprising: an internalspace wherein the treatment liquid introduced into the internal space isdepressurized and evaporated; a vapor outlet formed on a top of thechamber and through which vapors generated through the evaporation isdischarged; and a concentrated liquid outlet formed on a bottom of thechamber and through which the concentrated treatment liquid isdischarged; an inlet part coupled to a side surface of the chamber in adirection of a tangent line of an inner peripheral surface of thechamber between the vapor outlet and the concentrated liquid outlet, thetreatment liquid introduced into the chamber being turned in the form ofvortexes along the inner peripheral surface of the chamber; and at leastone partition wall protruding from the inner peripheral wall of thechamber to block large mist droplets contained in the vapors from movingupward toward the vapor outlet while allowing small mist droplets tomove upward together with the vapors through an opening in the at leastone partition wall, the at least one partition wall including a bottomthat is disposed above the tangent line of the inlet part, wherein thetreatment liquid is introduced into the chamber along the tangent lineof the inner peripheral surface of the chamber, such that the vortexesare formed below the bottom of the at least one partition wall.
 22. Theliquid-vapor separator according to claim 1, wherein the at least onepartition wall includes a top that is disposed above the bottom the atleast one partition wall and below the vapor outlet of the internalspace of the chamber.
 23. The liquid-vapor separator according to claim2, wherein the bottom of the at least one partition wall is disposedagainst the inner peripheral surface of the chamber, and wherein the atleast one partition wall protrudes inwardly from the inner peripheralsurface of the chamber and forms angle of less than 90° with respect tothe inner peripheral surface of the chamber.
 24. The liquid-vaporseparator according to claim 1, further comprising a guide part disposedalong the inner peripheral surface of the chamber from a connectedportion at the side surface of the chamber and configured to guide arotation of the treatment liquid introduced through the inlet part. 25.The liquid-vapor separator according to claim 4, wherein the guide partis disposed along an arc of a circumferential line of the innerperipheral surface of the chamber and protrudes from the innerperipheral surface of the chamber.
 26. The liquid-vapor separatoraccording to claim 4, wherein the guide part is fastened to the innerperipheral surface of the chamber.
 27. The liquid-vapor separatoraccording to claim 4, wherein the guide part comprises a pipe passingthrough the inlet part and extending into the chamber along the innerperipheral surface of the chamber.
 28. The liquid-vapor separatoraccording to claim 7, wherein the pipe of the inlet part includes a topportion facing toward the at least one partition wall, and wherein thetop portion of the pipe is open.
 29. The liquid-vapor separatoraccording to claim 1, further comprising an interior demister that isdisposed in the chamber above a top of the at least one partition wallin the chamber and includes a mesh type plate member configured to facethe opening in the at least one partition wall in order to block mistthat passes the at least one partition wall.
 30. The liquid-vaporseparator according to claim 1, further comprising an interior demisterthat is disposed in the chamber below the bottom of the at least onepartition wall in the chamber and includes a mesh type plate memberconfigured to face the opening in the at least one partition wall inorder to block mist contained in the vapors passing upwardly.
 31. Theliquid-vapor separator according to claim 1, further comprising anexterior demister disposed separately to an exterior of the chamber insuch a manner as to be connected to an end of the vapor outlet tointroduce the discharged vapors from the vapor outlet thereinto andhaving a chevron type member disposed in a moving path of the introducedvapors to block the mist contained in the vapors.
 32. The liquid-vaporseparator according to claim 1, wherein the inner peripheral wall of thechamber is tapered toward the concentrated liquid outlet formed on thebottom of the chamber to reduce a turning radius of the treatmentliquid.
 33. The liquid-vapor separator according to claim 12, furthercomprising a vortex breaking member disposed on an area wherein theconcentrated liquid outlet is formed on the bottom of the chamber so asto break the vortexes generated from the treatment liquid.
 34. Theliquid-vapor separator according to claim 13, wherein the vortexbreaking member comprises at least two plate members crossing each otherin such a manner as to be parallel to a discharge direction of theconcentrated treatment liquid.
 35. A cyclone type liquid-vapor separatorfor separating vapors from treatment liquid introduced thereinto,discharging the separated vapors to the upper portion thereof, anddischarging concentrated treatment liquid to the lower portion thereof,the liquid-vapor separator comprising: a chamber comprising: an internalspace wherein the treatment liquid introduced into the internal space isdepressurized and evaporated; a vapor outlet formed on a top of thechamber and through which vapors generated through the evaporation isdischarged; and a concentrated liquid outlet formed on a bottom of thechamber and through which the concentrated treatment liquid isdischarged; and an inlet part coupled to a side surface of the chamberin a direction of a tangent line of an inner peripheral surface of thechamber between the vapor outlet and the concentrated liquid outlet, thetreatment liquid introduced into the chamber being turned in the form ofvortexes along the inner peripheral surface of the chamber, the inletpart comprising a guide part configured to guide a rotation of thetreatment liquid introduced through the inlet part, the guide partcomprising a pipe passing through the inlet part, wherein the pipe ofthe inlet part is passed through the chamber to be extendedly insertedinto the chamber and includes a top portion that is open such thatevaporation of the treatment liquid occurs in an extendedly insertedarea of the inlet part.
 36. A forced circulation type evaporator forevaporating and concentrating treatment liquid, comprising: a heatexchanger configured to heat the treatment liquid introduced into theheat exchanger by a heat medium introduced from an exterior of the heatexchanger; and a liquid-vapor separator configured to separate vaporsfrom the heated treatment liquid from the heat exchanger, configured todischarge the separated vapors to an upper portion of the liquid-vaporseparator, and configured to discharge concentrated treatment liquid toa lower portion of the liquid-vapor separator, wherein the liquid-vaporseparator comprises: a chamber comprising: an internal space wherein thetreatment liquid introduced into the internal space is depressurized andevaporated; a vapor outlet formed on a top of the chamber and throughwhich vapors generated through the evaporation is discharged; and aconcentrated liquid outlet formed on a bottom of the chamber and throughwhich the concentrated treatment liquid is discharged; an inlet partcoupled to a side surface of the chamber in a direction of a tangentline of an inner peripheral surface of the chamber between the vaporoutlet and the concentrated liquid outlet, the treatment liquidintroduced into the chamber being turned in the form of vortexes alongthe inner peripheral surface of the chamber; and at least one partitionwall protruding from the inner peripheral wall of the chamber to blocklarge mist droplets contained in the vapors from moving upward towardthe vapor outlet while allowing small mist droplets to move upwardtogether with the vapors through an opening in the at least onepartition wall, the at least one partition wall including a bottom thatis disposed above the tangent line of the inlet part, wherein thetreatment liquid is introduced into the chamber along the tangent lineof the inner peripheral surface of the chamber, such that the vortexesare formed below the bottom of the at least one partition wall.
 37. Theforced circulation type evaporator according to claim 16, wherein the atleast one partition wall includes a top that is disposed above thebottom the at least one partition wall and below the vapor outlet of theinternal space of the chamber.
 38. The forced circulation typeevaporator according to claim 17, wherein the bottom of the at least onepartition wall is disposed against the inner peripheral surface of thechamber, and wherein the at least one partition wall protrudes inwardlyfrom the inner peripheral surface of the chamber and forms angle of lessthan 90° with respect to the inner peripheral surface of the chamber.39. The forced circulation type evaporator according to claim 16,further comprising a guide part disposed along the inner peripheralsurface of the chamber from a connected portion at the side surface ofthe chamber and configured to guide a rotation of the treatment liquidintroduced through the inlet part, wherein the guide part is disposedalong an arc of a circumferential line of the inner peripheral surfaceof the chamber and protrudes from the inner peripheral surface of thechamber, and wherein the guide part is fastened to the inner peripheralsurface of the chamber.
 40. The forced circulation type evaporatoraccording to claim 19, wherein the guide part comprises a pipe passingthrough the inlet part and extending into the chamber along the innerperipheral surface of the chamber, and wherein the pipe of the inletpart includes a top portion facing toward the at least one partitionwall, and wherein the top portion of the pipe is open.